UPSC CSE Prelims 2025
The coding scheme involves a direct letter-to-digit substitution. By analyzing the given coded words, a consistent mapping for each letter can be established:
It is observed that the mappings for common letters (E, R, A, N) are consistent across both coded words. Applying these established mappings to the word YEMEN:
Therefore, YEMEN is coded as 71813.
Options 1, 2, and 3 are incorrect as they do not follow the consistent letter-to-digit mapping derived from the provided examples. Any deviation in the assigned digits for Y, E, M, or N, or their sequence, would result in an incorrect code.